Carton breakerdowner tool



.July 2, 1957 c.- M. WRIGHT 2,797,492

CARTON BREAKERDOWNER TOOL Filed NOV. 18, v1954.

FIGZ.

INVENTOR ATTORNEY United States Patent 2,797,492 Patented July 2, 1957 CARTON BREAKERDOWNER TOOL Carlton M. Wright, Jackson, Mich.

Application November 18, 1954, Serial No. 463,713

3 Claims. (Cl. 33174) The present invention relates to improvements in tools for fiorming a sharp corner about which fiber shipping carton stock may be broken in shaping carton stock to a shipment of goods.

In packing mixed shipments or in single merchandise shipments, it is not economical to stock cartons for each size shipment. My improved carton breakerdowner tool is used to break down oversize cartons evenly at the top of the merchandise. This is accomplished by cutting down the corners of the carton to the top of the merchandise and then placing the tool blade against the inside of one side of the carton at the top of the merchandise with the other hand pressing the side of the carton inwardly about the tool blade. The side of the carton will break evenly over the blade and make a well shaped carton of the right size for the shipment. All four sides of the carton will be broken in the manner just described.

It is the object of the invention to provide a hand tool of the type described which is inexpensive to manufacture, efiective in use and capable of being adjusted to carton stock of different width.

In the drawings,

Fig. l is a side elevational view of the tool contracted to its minimum width,

Fig. 2 is a side View of Fig. 1, and

Fig. 3 is a view similar to Fig. 1 with the tool shown extended to its maximum width.

The tool comprises a break over edge 12 formed of two flat bar blades 14 and 16 each having a longitudinal slot 18 extending from adjacent one end to a point approximately midway to the ends. Each blade 14 and 16 has an ear 20 to which the handle bars 22 areconnected through pivot pins 23 carried by the blades 14 and 16. At their inner ends, the bars 22 have a common pivot member 26. A tension spring 28 acts upon portions 28 of the arms 22 to urge the arms 22 into the position of Fig. 1. Guide pins 24 attached to the blades 14 and 16 operate in the slots 18. The outer ends of the pins 24 are. flanged to retain the blades 14 and 16 in assembled relative sliding relation with each other.

It will be apparent that the width of the tool may be varied by the operator forcing the arms 22 toward each other against the tension of the spring 28. In this manner the blades 14 and 16 may be adjusted to conform to the inside of the cart-on and the carton side will be fully supported throughout its entire width.

Having thus described my invention what I claim as new and desire to protect by Letters Patent is:

1. A manual device for assisting in the forming of carton stock to the goods to be packaged by the carton comprising a pair of elongated straight edge members disposed upon each other in overlapping relationship for relative sliding of the members in opposite directions and each having a bending edge with the bending edges substantially in a straight line, interengaging means upon said members for guiding said members for relative sliding movement along directly adjacent parallel axes, handle structure in the form of a pair of arms, each having a common pivot atone end with the other end a pivotal connection with one of said members at the other end of each arm, said pivotal connection being located at the outer end of each of said members, and spring means urging said arms outwardly to bring said members into their maximum overlapping condition, said means including stop structure to limit the extended position of said members with minimum overlapping.

2. A manual device of the type described in claim 1 wherein said interengaging means takes the form of pins and slots.

3. A manual device as defined in claim 1 wherein said members have ears in their outer ends for the pivotal connection with said arms.

References Cited in the file of this patent UNITED STATES PATENTS 208,713 Carter Oct. 8, 1878 2,222,081 Leigh Nov. 19, 1940 2,323,048 Johnson June 29, 1943 2,644,239 Bellstaedt July 7, 1953 

